121801327 has 4 divisors (see below), whose sum is σ = 124633960. Its totient is φ = 118968696.

The previous prime is 121801321. The next prime is 121801403. The reversal of 121801327 is 723108121.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 723108121 = 1459 ⋅495619.

It is a cyclic number.

It is not a de Polignac number, because 121801327 - 2³ = 121801319 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121801321) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1416252 + ... + 1416337.

It is an arithmetic number, because the mean of its divisors is an integer number (31158490).

Almost surely, 2^121801327 is an apocalyptic number.

121801327 is a deficient number, since it is larger than the sum of its proper divisors (2832633).

121801327 is an equidigital number, since it uses as much as digits as its factorization.

121801327 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2832632.

The product of its (nonzero) digits is 672, while the sum is 25.

The square root of 121801327 is about 11036.3638486596. The cubic root of 121801327 is about 495.6981978051.

Adding to 121801327 its reverse (723108121), we get a palindrome (844909448).

The spelling of 121801327 in words is "one hundred twenty-one million, eight hundred one thousand, three hundred twenty-seven".